Rarest A-Body Option?

Yeah the rear shoulder belts were available by special order, around 1970.
I've seen more of those in E-bodies than A=bodies.
A 60/40 split bench. Fold down armrest moved with the drivers side. I've only seen one. Was a brown 4 door 74 Dart custom. That car had everything !
Oddly enough , Dad had a Maverick with LTD apointment (i think thats the word for it). Plush carpet, reclining seats, etc, etc... and it was also a brown 74 model.